Unlock PDF
Remove password from protected PDF — decrypt with correct password in browser.
Use Cases
Typical scenarios for Unlock PDF — see if it fits before you start
Unlock PDF · Office
For everyday secure tasks, Unlock PDF is tuned for speed and fidelity to meet submission and printing needs.
Unlock PDF · Study
Students and researchers secure lecture scans and papers in batches with Unlock PDF, saving manual work.
Unlock PDF · Private
For sensitive resumes and contracts, Unlock PDF runs 100% locally — no upload, data cleared when you close the tab.
How to Use
- Upload — Click or drag PDF/images to the dashed zone. Multi-file and large files (<100MB per batch recommended) are read locally only.
- Configure & process — Set pages, angle, password or quality, then hit “Calculate / Process”. Unlock PDF runs via WebAssembly and pdf-lib in your browser — no server queue.
- Preview & download — Check pages, size and thumbnails on the right, then download. Batch jobs download one by one; tweak and re-run if needed.
Tips & Notes
- Page syntax: Use
1,3,5-7or1-10,15; empty means all. Out-of-range pages are ignored. - Privacy & size: Everything runs locally — no server upload. For large files, process in batches of 50–100 pages.
- Fidelity: Fonts and vectors are preserved where possible. For scanned PDFs, run OCR/searchable PDF first, then convert.
FAQ
Will files be uploaded? Is Unlock PDF safe?
No. Unlock PDF runs 100% in your browser via File API; no network upload, memory cleared when you close the tab.
Processing failed or download blocked?
Check page ranges, passwords and file integrity. If the browser blocks multiple downloads, allow “automatic downloads” or click links one by one.
How to chain with other security tools?
Combine workflows: organize pages first, then compress/convert for submission, then protect/sign for delivery.
วิธีใช้งาน
Upload protected PDF, enter password, unlock and download.
All calculations run locally in your browser; nothing is uploaded.